after taking the head off my b18a and then putting everything together again, i start the engine and it is a very rough idle, dies, only stays on when i give it gas, and stutters bad while doing so. checked all my vac hoses and those are fine.... timing was set to stock also.... could it be that my TDC was off??? how can i correct??? thanks

 

check the cam gears and crankshaft are lined up then check timing, don't you have a helms manual, I hope you do? Did you also adjusted your valves to spec?

 

your cam timing is probably off. set the crank to TDC and the cam as well and then put the timing belt on.